I remember someone before asking on "HOW TO MAKE A TEAMMATE TO TRHOW A FLASH BANG??"
So, I just take 10 minutes to make a research on this, and get good results.
By opening the teammates ADM file, I found the animations needed.
Here are the animations:

anim_grenade_1l ............ // Throw a Flash Bang with the LEFT hand.
anim_grenade_1r ............ // Throw a Flash Bang with the RIGHT hand.
anim_grenade_2l ............ // Throw a GRENADE with the LEFT hand.
anim_grenade_2r ............ // Throw a GRENADE with the RIGHT hand.

Examples:

Lets say my Delta teammate is SSN3, so I make this Wac event:
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if elapse(10) then
SSNanim(3, anim_grenade_1l)
endif
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So, the results were good, my teammate throw a Flash Bang every 10 seconds with the left hand.

Now I make a Wac event like this:
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if elapse(10) then
SSNanim(3, anim_grenade_2l)
endif
****************************
So, the results were good, my teammate trhow a Grenade every 10 seconds with the left hand.